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Finding the Fourth Proportional to 313.04, 431.34 and 214.62

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Solution

The fourth proportional to 313.04, 431.34 and 214.62 is: 295.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.04 : 431.34 = 214.62 : x
  2. Step 2: Convert to fraction form
    313.04/431.34 = 214.62/x
  3. Step 3: Cross multiply
    313.04x = 431.34 × 214.62
  4. Step 4: Simplify right side
    313.04x = 92,574.19
  5. Step 5: Solve for x
    x = 92,574.19/313.04
  6. Step 6: Final answer
    x = 295.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.